Brick-supporting thermic siphon



C. G. HAWLEY BRICK SUPPORTING THERMIC SIPH'ON Flled May 13 1922 1, V///4//// m 8 ,7 0L lab /4 .m F n Patented Feb. 16, 1926.

' UNITED STATES [PATENT OFFICE.

CHARLESGILBEBT HAWLEY, or CHICAGO, ILLINOIS, ASSIGNOR T LOCOMOTIVE FIRE- BOX COMPANY, or CHICAGO, .ILLInoIs, A CORPORATION OF DELAWARE.

BRICK-SUPPORTING THERMIC SIPHON.

Application filed May 13, 1922. Serial no. 560,670.

7 To all whom it may concern:

Be it known that I, CHARLES GILBERT HA'WLEY, a citizen of the United States, and a resident of Chicago, Cook County, Illinois, have invented certain new and useful improvements in and for Brick-Supporting Thermic Siphons, of which the following is a specification.

My inventionrelates to improvements in so-called Nicholson thermic siphons and has particular reference to the adaptation of such siphons for the support of arch brick.

A thermic siphon is a hollow water wall of substantially triangular shape, distinguished by a bulging bottom portion or beam portion. an extension of which, at the front lower end, forms theintake neck of the siphon. The siphon is installed in a vertical longitudinal position within the fireboxof a locomotive, and one of its offices is-to serve. as a support for the brick composing the lire arch of the locomotive firebox I My nvention will be readily understood on reference to theaccompanying drawings,

' in which Fig. 1 is a verticallongitudinal section of a locomotive firebox'embody1ng my invention; Fig.2 is across-section thereof on the line 22 of Fig. 1 Fig. 3 is an enlargedcross section of the bottom or beam portion of a thermic siphon of the modified form comprising my invention, and Fig.4 is a cross-sectional view of reduced size, showing the manner in which thermic siphons heretofore have been equipped with studs, 2, for the supportof the arch brick, 3.

The object of this invention is two-fold, to improve the form of the siphon with reference to the stay-bolts which join its sides and so to shape the bulging portionof the siphon as to adapt it for the direct'support of arch brick without resort to'such studs as just described. In Figs, 1 and 2 I have shown a firebox containing two ofthe thermic siphons S, each having a bulging bottom or beam portion S terminating in an intake neck S As shown, these-siphons, together withthe sides 4 of the firebox, serve to supportithe several rows of firelorick 3, which constitute the arch A. My invention is best depicted in Fig. 3. The body'of the siphon is made from agsingle sheet of metal, which is folded upon itself and given the bulging form here shown, This bulging form differs from all others in'that it does not conform to a circle in cross section, but is slightly distorted for the purpose of providing the brick supporting ledgesS The .kind and extent of distortion practice is well represented at points 5 and 6, where, the departure from circular form is depicted. By departing from a true circular form to the eXtentof little more than 4 th of an inch at these points I am able to provide aledge S of-substantially 40 inclination to the horizontal, which isamply abrupt to safely, support the arch brick. I accomplish this by forming the portions 7, 7, upon'a radius substantially equal to the diameter of the bulging portion S At the point-8this radius merges into the 40 section S andthe latter, at the point 9, merges into the vertical or side portion 10 of the siphon. Theradius 11 and the radius" 12 approximate ,5; of an inch. A greater radius may be used, but the radius defined is adequate in the caseof a beam portion 5 having an external diameter of approximately seven inches. This form and departure from circular shape is made possible by the rigidity ofthe plate sections S which resist distortion and therefore serve to main-- cluding walls substantially parallel with said sidewalls, therebeing inclined ledge walls between and connecting said parallel side walls and said walls'forming the upper part of said bulged bottom portion, whiclrledge walls each provides a full face contact seat for one end of an associated fire brick.

.. 2. A thermicsiphon including. spaced 7 parallel side walls and bulged tubular bottoin portion of a diameter greater than the Walls between said curved Walls and said spacing between said side Walls, the loWer parallel side Walls, which ledge Walls each part of said bottom portion being semiprovides a full face contact seat for one end 10 cylindrical and the upper part thereof inof an associated fire brick.

5 eluding curved Walls made on a radius equal- In testimony whereof, I have hereunto set ling the diameter of said lower part of said my hand this 6th day of May, 19:22. bulged portion, there being inclined ledge CHARLES GILBERT HAYVLEY. 

